By using the theoretical derivation

the method of combining numerical simulation method with modern experimental means

firstly

through SG grinding wheel

the finite element model of temperature field of 20CrMnTi spiral bevel gear tooth form grinding is established

the temperature field simulation analysis is carried out by using rectangular distribution of heat source method of moving load and ANSYS software.The influence law of different grinding parameters on the distribution of temperature field of grinding process is got.Namely with the increase of grinding depth

the temperature of workpiece surface temperature in the grinding zone rises

grinding wheel linear velocity is higher

the grinding temperature rises.With the increment of generating speed

the graph showed a trend of increasing after the first reducing of the grinding temperature and maximum temperature are located around grinding arc center.Then

the color and morphology of spiral bevel gear wheel burns surface is observed.By observing the microstructure of burn area

the organization on the surface of quenching burn area is troostite.When moderate burn of the burn area

the organization at the outer surface of the secondary quenching martensite

the bottom of quenching burn area is tempered martensite or sorbite.When serious burn of the burn area

the organization at surface is sorbite.Finally

it is found that when the gear in slight burns

the surface microhardness significantly below the hardness before grinding

the metamorphic layer depth is greater than 0.2mm

when severe burns

annealing burn surface and surface hardness drop more

the metamorphic layer depth increased

and the more severe burns

the more fall of surface micro hardness.It is concluded that

when the metamorphic layer depth is greater than 0.2mm

different degree of grinding burn is produced.